Let's solve this system of equations through substitution.
We have these two equations.
-7x-2y=14
6x+6y=18
Now let divide the second equation by 6.
6x+6y=18 ----> x+y=3
Next, let us move y to the right side of the equation.
x+y=3 -------> x=3-y (x equals 3-y)
Because we found out that what x is in terms of y, we can input that in for every instance of x in this equation below.
-7x-2y=14 becomes -7(3-y)-2y=14 (Why? Because x equals 3-y!)
We have a one variable equation now and can solve for y.
-7(3-y)-2y=14
-21+7y-2y=14
5y=35
y=7
Plug in 7 for y in any equation to find x.
x+y=3
x+7=3
x=-4
answer: x=-4, y=7
Answer:
C and D
Step-by-step explanation:
In naming an angle using 3 letters the letter denoting the vertex is always located in the middle of the 3 letters
Thus ∠BAC and ∠CAB
Answer:
sure whats the picture?
Step-by-step explanation:
Answer:
A. 7n+6
B Three times the quantity of a number plus eight
Step-by-step explanation:
A more than means it comes after
7 times a number
7n
6 more than
7n+6
B 3( n+8)
Three times the quantity of a number plus eight
